Founding offer
49% off + Free Welcome Kit
Lisa P.
My cat has been on Nutribial for around 30 days now, and the improvement is so apparent. Thank you.
A liquid blend of B-vitamins and gentle heme iron, made for cats. Heme iron is the form found naturally in meat, which is how cats are built to take iron on board. No fillers and no artificial flavours.
Produced in a quality-controlled facility and checked batch by batch for purity and consistency, so every dropper is the same as the last.
A daily dose dropped straight onto whatever your cat already eats — wet food, a lick mat, or a treat. No pills and no chasing. The dropper is marked so it is easy to get right.
See it in action
The daily cat protocol
One daily drop of B-vitamins and bioavailable heme iron, formulated for your cat's metabolism to support everyday energy, appetite and digestion.
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Welcome kit — arrives with your first order
Welcome gifts ship free with your first order. Stay subscribed and a loyalty gift (a grooming kit) arrives with your month-3 box — no surprise charges, cancel or pause anytime.
Welcome kit — arrives with your first order
Welcome gifts ship free with your first order. Stay subscribed and a loyalty gift (a grooming kit) arrives with your month-3 box — no surprise charges, cancel or pause anytime.
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A liquid blend of B-vitamins and gentle heme iron, made for cats. Heme iron is the form found naturally in meat, which is how cats are built to take iron on board. No fillers and no artificial flavours.
Produced in a quality-controlled facility and checked batch by batch for purity and consistency, so every dropper is the same as the last.
A daily dose dropped straight onto whatever your cat already eats — wet food, a lick mat, or a treat. No pills and no chasing. The dropper is marked so it is easy to get right.
See it in action
Founding cohort
What owners are seeing
A drop on her food every morning, and within a couple of weeks she was waiting at the bowl before I had even put it down. She had gone a bit picky over the last year, so seeing her keen for breakfast again was lovely. Her coat looks glossier too. Genuinely the easiest thing I have added to her routine.
I had basically given up on supplements because he would spit pills straight back out and sulk for an hour afterwards. This one just goes on his wet food and he laps the whole lot up. No fight, no chasing him round the kitchen, no powder left in the bowl. A few weeks in he seems a bit brighter in himself, which is all I wanted.
A few weeks in and he is back on the windowsill in the mornings instead of staying curled up all day. He is more about during the afternoon too, following me from room to room like he used to. I was not expecting much at fourteen, so it has been a really nice surprise. Lovely to see a bit of spark in him again.
I was juggling a separate iron tub, a B-vitamin liquid and a coat oil, and honestly using none of them properly. Now it is one dropper, once a day, and she takes it without a single complaint. The cupboard is a lot tidier and so is my head. Simpler to keep up with means she actually gets it every day.
She is sixteen and the slow afternoons had quietly crept in over the past year. A month on the daily drop and there is a bit more about her, pottering around the flat instead of sleeping the whole day away. Small thing, but it is the difference between a cat who is just there and one who is still part of the house. I am keeping her on it.
The dropper makes it genuinely effortless, which matters because I am not the most consistent person. One squeeze over breakfast and we are done for the day. Her bowl is getting cleared again like it used to be, and she has stopped leaving half of it. Easy enough that I actually remember to do it.
Our old boy had got fussy and a little flat, and the vet visits never turned up anything specific, just his age. We started the drops mostly hoping, and a few weeks on he is eating properly again and seems steadier through the day. He is not a kitten, but he is more himself. That is worth a lot to us.
I had read the label and liked that it was not a long list of fillers, just the actual vitamins and the iron. She took to the taste straight away, which surprised me as she is normally suspicious of anything new. A couple of months in her coat feels softer and she has a bit more energy in the evenings. Glad I gave it a go.
She had got into the habit of sleeping through to lunch, so I was not expecting much. A few weeks on the daily drop and she is back up on the sill in the mornings watching the birds like she used to. It goes on her breakfast without any fuss and she licks the bowl clean. Lovely to see a bit of her old routine again.
Years of traditional botanical use
Heme iron bioavailability
Named doses, no proprietary blends
Per bottle — a 30-day supply
Named Doses.
Real Heme Iron. Everyday Vitality.*
B-vitamins and bioavailable heme iron, made for your cat's metabolism.
What one daily drop covers
One drop. The whole cat.
A senior cat rarely has one neat problem. It is a few small things at once, all at the same time. Here is what one daily drop quietly supports, and why.
The slow mornings, the longer naps.
The heme-iron and B-vitamin core is the spark that turns food into energy. Thiamine gates how the cell makes that energy, and cats need two to four times more of it than dogs do.
Picking at the bowl she used to finish.
Vitamins B6 and B1 sit right at the appetite and metabolism workbench. They help the bowl actually become fuel, so a slowing senior keeps showing up for dinner.
Quietly off, somewhere you cannot see.
Folate is absorbed high in the small intestine, exactly where inflammation tends to settle first. It is the absorption anchor that helps the rest of the formula land.
The shine and softness fading.
Vitamin E is the lipid-soluble shield the coat reflects, and vitamin C recharges it. Aging is oxidative wear, and the coat is where you watch that balance hold.
The blood quality underneath it all.
Heme iron is the form a carnivore's gut actually takes up, through its own carrier instead of the irritating ferrous-salt route. It is the haematinic base the energy sits on.
Just not quite himself lately.
One daily drop keeps the building blocks arriving on a steady schedule. Built for everyday use, so support becomes the routine instead of a one-off scramble.
Inside every drop
Nine actives. Each with a job.
The breadth above is not magic. It is nine named ingredients, each doing one specific job, in doses built for a cat.
The carnivore-ready form of iron, absorbed through the gut's own heme pathway rather than competing for the acid-dependent route. As the metal at the centre of haemoglobin and the muscle's oxygen stores, it supports healthy iron status and the steady oxygen delivery that keeps a senior cat moving. The haematinic base the rest of the formula is built on.†
Blood & Iron
An obligate-carnivore cat runs its liver hot, burning protein around the clock, and B6 is the cofactor that keeps that machinery turning. It is also the spark that lets stored iron be built into fresh haemoglobin, and it helps route waste toward glycine instead of oxalate. Supports healthy B-vitamin status and urinary tract function in senior cats.†
Energy
Cats need two to four times more thiamine per pound than dogs, and it is the most fragile of the B-vitamins, often thinned by cooking, processing, or a fish-heavy bowl. It sits at the gateway of cellular energy, turning food into the fuel that powers a hungry brain and a working heart. Supports healthy energy and appetite.†
Energy
Absorbed only in the upper gut, folate is the one-carbon donor that lets fast-renewing cells, from the intestinal lining to red-cell precursors, divide and mature on schedule. When the gut is working hard, it supports the continuous mucosal renewal that keeps digestion comfortable, working hand in hand with iron on healthy blood. Supports healthy digestion in adult and senior cats.†
Digestion
The body's principal fat-soluble antioxidant, guarding the polyunsaturated fats in every cell membrane, and the fat stores themselves, from oxidation. It matters most for fish-fed and raw-fed cats, whose richer fat diets ask more of their antioxidant reserve. Supports healthy adipose tissue, immune function, and, alongside B6 and iron, a healthy coat.†
Coat & Antioxidant
Cats make their own vitamin C, so this is not about filling a gap. Its job here is partnership: ascorbate recharges spent vitamin E back to its active form, keeping the antioxidant relay running when an older cat's oxidative load climbs. Part of an antioxidant blend that supports balance in senior cats.†
Coat & Antioxidant
A traditional cardiovascular botanical whose procyanidins gently support the endothelium's own nitric-oxide signalling and easy vessel tone. Carried at a structure-function level, it supports healthy cardiovascular function in mature cats as part of the formula's mature-cat botanical layer. Not a substitute for veterinary cardiac care.†
Mature-Cat Botanicals
A classical botanical whose paeoniflorin carries calming, anti-inflammatory activity across the gut and connective tissue. Within the formula it adds a soothing, mucosal-friendly note that supports comfortable digestion and a calm, settled senior cat. A mature-cat botanical that complements the B-vitamin and iron core.†
Mature-Cat Botanicals
Known in traditional practice as a blood-nourishing root, Dong Quai rounds out the formula's blood-and-iron foundation. Its polysaccharides are the classical tonic complement to heme iron's substrate, included as part of a complete, mature-cat approach to healthy blood and vitality. A botanical for adult and senior cats, not for kittens, pregnant queens, or cats on heart or blood-thinning medication without veterinary guidance.†
Blood & IronOne bottle. A few drops.
No pills to force, no powders to mix — just drops, once a day.
Squeeze the bulb and draw up the deep-amber liquid. That colour is the heme-iron base — the part doing the real work.
Drip it over wet food, onto a lick mat, or straight into her mouth. The heme keeps it palatable, so she actually takes it.
One dose, same time each day. With a senior cat steady wins — the building blocks just keep arriving.
NUTRIBIAL
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Questions, answered
Nutribial is a once-daily liquid dropper for cats that brings nine ingredients into one bottle: bioavailable heme iron, the energy and appetite B-vitamins (B1, B6 and B9), and an antioxidant pairing of vitamins E and C. It's a designed daily protocol, so you get one bottle instead of buying these ingredients separately. It supports healthy iron status, energy, appetite, coat and senior wellness.
As cats age, the everyday things start to slip: the energy at the bowl, the appetite, the shine in the coat. Nutribial feeds the building blocks behind those things every day. Heme iron is the form a carnivore's gut actually absorbs (it enters through its own carrier instead of the irritating ferrous-salt route), and thiamine matters because cats need two to four times more of it than dogs. Together they help turn food into the energy your cat runs on, supporting healthy senior wellness as part of the daily routine.
Nutribial supports healthy iron status and energy levels, a healthy appetite, healthy digestion, a healthy coat and skin, and antioxidant balance in senior cats. These are structure-function support claims: Nutribial is a daily supplement, not a medicine, and it isn't intended to diagnose, treat, cure or prevent any disease.
One daily dropper. The heme iron is palatable, so most cats take it straight onto wet food, mixed into a little broth, or gently by mouth. Give it at the same time each day and it becomes part of the routine. No pills, no powders, no fuss.
Nutribial is a structure-function supplement made for cats, with nine named ingredients and no hidden blends. As with any supplement, speak to your vet first if your cat is a kitten, is pregnant or nursing, has a heart condition, has a history of calcium-oxalate stones, or is on cardiac or anticoagulant medication. We disclose these openly rather than hide them.
Nutribial is backed by a 90-day money-back guarantee, so the risk is on us, not you. Give it an honest daily try, and if you're not happy, contact us within 90 days for a full refund. Choose a monthly plan at checkout and your bottle ships on a regular schedule, so you never run out mid-routine. You're in control: pause, change your delivery date, or cancel anytime from your account.
Week by week
This is the long game, not a quick fix. One daily drop, quietly doing its job, while the small things you may have been missing tend to come back over the weeks. Here's roughly how it goes.
Easiest supplement I've ever given a cat
A few drops on his food and he doesn't even notice it's there. After trying powders he'd turn his nose up at, this is the simplest thing I've added to his routine.
No more wrestling a pill every morning
That alone was worth it. He used to clamp his mouth shut at the sight of a tablet, and now the drop just goes on his food and he gets on with breakfast.
Her coat looks lovely
She's been on it about a month now and she's very much her usual self. Her coat looks lovely and she still comes running at mealtimes, which is all I really wanted.
Even our fussy eater takes it fine
Our older boy is famously picky, so we were ready for a battle. Instead he takes it without a second glance once it's mixed into his wet food.
Part of the morning routine now
I keep it next to his bowl and it just goes on with breakfast. He's never once turned his nose up at it, which is more than I can say for the last thing I tried.
Two cats, no drama
Both of mine get a drop on their wet food and neither has noticed. Sorting two cats every day used to be a faff and this just isn't.
The dropper makes it simple
I was worried about getting the amount right, but the dropper is straightforward and he laps it up once it's mixed into his food.
He still comes running at mealtimes
A few drops mixed in and he's none the wiser. He still bolts over when I shake the bowl, which is all I was really after.
Simple to keep up with
One bottle, one drop a day, no powders or pills to hide. It's an easy thing to stay consistent with, and that was the whole point for me.
Week 1
Getting it into the routine
The first job is simply landing the drop in the bowl each day, so the nutrients start arriving on a steady schedule.
There's no loading phase to it. The drop simply puts the B-vitamins and heme iron into the bowl on a fixed daily schedule, so the supply is steady from day one instead of arriving in fits and starts.
Week 2
The basics settling in
With the B-vitamins and heme iron arriving daily, the building blocks for healthy energy are in steady supply.
There's no loading phase to it. The drop simply puts the B-vitamins and heme iron into the bowl on a fixed daily schedule, so the supply is steady from day one instead of arriving in fits and starts.
Week 3
Coat and condition
Vitamin E and the antioxidant blend support a healthy coat and skin, which is usually where owners start to look.
There's no loading phase to it. The drop simply puts the B-vitamins and heme iron into the bowl on a fixed daily schedule, so the supply is steady from day one instead of arriving in fits and starts.
Week 4+
Part of the everyday
Built for daily use, the drop becomes one of those small things that quietly earns its place in the cupboard.
There's no loading phase to it. The drop simply puts the B-vitamins and heme iron into the bowl on a fixed daily schedule, so the supply is steady from day one instead of arriving in fits and starts.
